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National Instruments PXIe-5694 Calibration Instructions Manual
Also see for PXIe-5694: Getting started guide
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NI PXIe-5694 Calibration Procedure | © National Instruments | 33Adjusting IF Gain for Bypass PathComplete the following procedure to measure and adjust the IF gain for bypass pathperformance of the NI 5694 IF conditioning module.1. Zero and calibrate the power sensors using the built-in functions in the power meter.2. Ensure that the hardware is properly configured as described in Configuring the Hardware.3. Run the self-calibration procedure for the NI 5622 digitizer.4. Initialize an external calibration session for the NI 5694.5. Initialize an IF attenuation calibration step.6. Configure the NI 5694 as follows:• Signal conditioning: Bypassed• IF conditioning downconversion: Disabled• Step gain: Disabled7. Configure RF source 1 as follows:• Single frequency mode• Frequency: 107.5 MHz• Power level: 0 dBm8. Configure the power meter as follows:• Channel 1: Power sensor A• Trigger with settling delay• Sensor setting: 0.1%9. Configure the NI 5622 digitizer as follows:• Sampling rate: 585.9375 kS/s• Number of samples to acquire: 40,960• Reference source: PXI_Clk• Reference Clock rate: 100 MHz• DDC enabled: TRUE• Data processing mode: Complex• Frequency translation enables: TRUE• DDC center frequency: 107.5 MHz• Dither enabled: FALSE• Bandpass filter enabled: FALSE10. Read the power meter channel A power.11. Calculate the NI 5694 IF input power using the following equation:IF Input Power = Channel A Power + Splitter Tracking at RF Source Frequency |
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